Blog - Page 84 of 121 - Lower Cholesterol and Blood Pressure with Lisa Nelson RD

Lower CholesterolSaturated Fat Not Linked to Heart Disease – What Do You Think?

Published February 17, 2010

The latest research published in the American Journal of Clinical Nutrition found that saturated fat is not linked to heart disease as we’ve always be told. This latest study was a meta-analysis and did not find significant evidence linking dietary saturated fat with increased risk of heart disease.

A meta-analysis combines the results of several studies completed with similar theories. In this particular analysis, 21 studies were compared in regards to dietary fat and heart disease risk. I do like meta-analysis results, because they can provide a big picture look at the overall findings. However, there are weaknesses.

Here are three known weaknesses:

Reliance on published studies – Studies that do not show significant results have difficulty getting published. If a meta-analysis only includes studies showing a positive or negative association there could be many unpublished studies finding no link.
Studies included are not controlled – A meta-analysis may include studies with a poor design which can skew results inaccurately. The studies included in a meta-analysis is a subjective design made by the researchers – they get to decide.
Simpson’s Paradox – This deals with statistics and how study results are interpreted. There are different ways to measure results and there is no one agreed upon measurement method – with is of particular importance in the field of medicine.

Why am I sharing this information with you?

Because the results of this latest meta-analysis are interesting, but I do not recommend you throw out your olive oil and replace it with lard. It’s likely saturated fat does not deserve the “bad rap” it has received; however, that doesn’t mean excess amounts are good. Everything comes back to moderation.

Please let me know what you think by adding a comment below.

All the best,
Lisa Nelson, RD

Posted in Heart Health, Lower Blood Pressure, Lower Cholesterol | Tagged analysis, blood pressure, cholesterol, Heart Disease, meta-analysis, research, saturated fat, study

Lower CholesterolCholesterol Awareness with an Olympian

Published February 16, 2010

Mark Spitz is now a retired Olympic swimmer and he turns 60 years-old on February 10th. In case you do not know of Mark Spitz, Mark won 7 gold medals at the 1972 Olympic games. His record was just recently surpassed by Michael Phelps at the 2008 Beijing Olympics with 8 gold medals.

Back in 2002, Mark was diagnosed with cholesterol levels above 300 mg/dl. He worked with his physician to lower his levels through exercise and medication. His total cholesterol was back down below 200 mg/dl within one month. Mark’s been quoted as saying “I was shocked when I was diagnosed with high cholesterol because I had no symptoms at all.” In the past few years Mark has openly discussed his history with high cholesterol and has actively encouraged continued research and awareness.

One of the 2010 national health objectives is to decrease the number of adults with total cholesterol levels >240 mg/dl. A strategy used to reach this goal is increased public awareness. The CDC has found that the number of people screened for high cholesterol and told by a health professional they have high cholesterol has increased. Before you can take action to lower cholesterol levels you have to be aware your cholesterol is an issue. If you do not know your cholesterol levels discuss with your physician to have the necessary lab work completed.

Be sure to sign-up for the free course How to Lower Cholesterol in 8 Simple Steps provided by dietitian Lisa Nelson at http://www.lowercholesterolwithlisa.com.

All the best,
Lisa Nelson RD

Posted in Heart Health, Lower Cholesterol | Tagged awareness, cholesterol, high cholesterol, lower cholesterol, mark spitz, olympian, olympic, screening

Lose WeightSlow Down and Taste Your Food

Published February 9, 2010

In a previous post – Lose Weight By Slowing Down – we discussed how taking at least 20 minutes to eat your meals will increase your satiety (fullness) and prevent you from overeating. By slowing down you can promote weight loss. I wanted to share a little more information on this subject:

Greek researchers recently studies hormone levels in 17 healthy men. They had the men eat a bowl of ice cream (675 calories) in 5 minutes and then eat a bowl of ice cream in 30 minutes. When participants took 30 minutes to eat the ice cream they had higher levels of two peptides that signal satiety (fullness) even though the hunger hormone (ghrelin) was not reduced.

How quickly do you eat your meals? Do you have any good tips to share with others on how they can slow down?

All the best,
Lisa Nelson, RD

Posted in Lose Weight | Tagged eat slower, fullness, satiety, slow down

Lower CholesterolLDL Cholesterol – Elevated LDL Cholesterol Prevalence Has Decreased

Published February 4, 2010

A Centers for Disease Control and Prevention (CDC) report found the number of individuals in the U.S. living with elevated LDL cholesterol levels has decreased by about 1/3 between 1999-2000 and 2005-2006. These findings are based on the results of the National Health and Nutrition Examination Survey (NHANES) with just over 7,000 participants over the age of 20. According to CDC scientists the rate of high LDL levels decreased from 31.5% to 21.2%. Individuals included in the study were not taking statin medications, although self-reported use of statin medications increased from 8% to 12.4%.

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Posted in Lower Cholesterol | Tagged cholesterol, LDL, ldl cholesterol, lower ldl cholesterol

Lower Blood PressureLower Blood Pressure with Flavonoids

Published February 2, 2010

Flavonoids, a type of antioxidant, can be very beneficial to heart health. Some flavonoids prevent atherosclerosis and promote the relaxation of arterial muscles, which allows arteries to dilate (widen) and blood flow to be easier. Other flavonoids reduce LDL oxidation and prevent platelets from sticking together. One study evaluated the affect of a plant rich in flavonoids on 120 men and women diagnosed with high blood pressure and high cholesterol. The study found significantly decreased systolic and diastolic blood pressure over a 6 month period linked to the plant flavonoids. Study participants also had reduced total cholesterol, LDL cholesterol, triglycerides, and increase HDL cholesterol. More studies are needed, but a there is a definite link between flavonoids and reduced blood pressure.

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Posted in Lower Blood Pressure | Tagged antioxidants, flavonoids, lower blood pressure

Lower CholesterolHDL Cholesterol – Are you concerned about levels being too high?

Published January 28, 2010

Lisa Nelson: Are you concerned by unusually high HDL levels, such as greater than 100 mg/dl?

Dr. Shelby-Lane: The main function of HDL is to help soak up excess cholesterol from the walls of blood vessels and carry it to the liver, where it breaks down and is removed from the body in the bile.

Measuring for particle size and particle number is the best way to tell if HDL cholesterol levels are safe/healthy. This involves testing and it is usually measured under the guidelines of an “expanded lipid profile.” The usual and optimal range for HDL is (40 for men and 50 for women).

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Posted in Lower Cholesterol | Tagged cholesterol, cynthia shelby-lane, hdl cholesterol